ci: build with Cargo before building with Ninja

.appveyor.yml

@@ -341,10 +341,13 @@ before_build:
       Set-FilesNeeded -Auto -Path $outputs -Reason "Build dependency graph"
 
 build_script:
-  - python tools\build.py
-  - ps: Set-FilesNeeded -Auto -Reason "Build finished"
+  # Build with Cargo first. Both builds produce a deno.exe in the same dir. We
+  # want the final one (which gets tested and released) to be built by Ninja.
   - cargo build -vv --release
-  - ps: Set-FilesNeeded -Auto -Reason "Cargo check finished"
+  - ps: Set-FilesNeeded -Auto -Reason "Cargo build finished"
+
+  - python tools\build.py
+  - ps: Set-FilesNeeded -Auto -Reason "Ninja build finished"
 
 test_script:
   - python tools\lint.py

.travis.yml

@@ -73,15 +73,17 @@ script:
   ./tools/build.py -C target/debug -j2 test_cc
   ./target/debug/test_cc
 
+- |-
+  # Build deno.exe with Cargo first. Both builds write their output to the same
+  # directory. We want the final one (which gets tested and released) to be
+  # built by Ninja.
+  cargo build --release -vv -j2
+
 - |-
   # Release build and test
   ./tools/build.py -C target/release -j2
   DENO_BUILD_MODE=release ./tools/test.py
 
-- |-
-  # Cargo check
-  cargo build --release -vv -j2
-
 before_deploy:
 - gzip -c target/release/deno > target/release/deno_${TRAVIS_OS_NAME}_x64.gz
 deploy: